I love my garrison, and one of my favorite buildings in it is the Trading Post. Not only does the level three version get you a not-too-shabby reputation bonus, but every day a trader shows up and you can trade garrison resources (which I’m pretty much always maxed out on thanks to missions, I dunno about you) for raw materials that you can sell.
Here’s how to do it:
1.) Keep your missions rolling every day so you can bring in garrison resources. Missions that pull in a good number of resources (like 300) are fairly common so keep checking back. Have one or two followers with the Scavenger trait for an added bonus.
2.) Every day, check to see what the trader in your Trading Post is selling. Only buy things that cost 4 resources per item.
3.) Buy a chunk of that stuff. Stick it in your bank. Dump it on the AH when you’ve got a stack.
Anyways that’s my tip for the day. Remember, Pike loves you, and your garrison loves you too! <3